when an array flag is used with a default, but the user doesn't specify a value, subsequent flags are read into the array <img width="489" alt="Screen Shot 2022-05-02 at 9 28 22 AM" src="https://user-images.githubusercontent.com/4261788/166251662-bb12b5aa-dfe2-41d0-b74e-55e9594917ba.png"> suggestion: array flags *don't* read values starting with `-` or `--`
when an array flag is used with a default, but the user doesn't specify a value, subsequent flags are read into the array
suggestion: array flags don't read values starting with
-or--